KR100367452B1 - Wireless conference phone system using VoIp(Voice over Internet Protocol) - Google Patents

Abstract

The present invention relates to a wireless conference phone using VoIP.

The present invention is to provide a wireless conference phone system via the Internet using VoIP that can save communication charges.

In the present invention, a handset and a baseset wirelessly connected to the handset, a local PSTN connected to the baseset, a LAN connected to the baseset, a counterpart connected through the local PSTN, or connected through the LAN and the Internet. In a conference phone system including a terminal, when the voice and DTMF signals are transmitted from the handset, the digital signal is received by the baseset and transmitted to a counterpart terminal using the Internet via a USB of a PC. A system is proposed that allows a handset to receive a signal wirelessly in a set.

According to the present invention, since the voice and the like can be transmitted and received by VoIP technology using the Internet, it is possible to reduce costs such as long distance calls and international calls, and to use the Internet efficiently.

Description

Wireless conference phone system using VIPIP {Wireless conference phone system using VoIp (Voice over Internet Protocol)}

The present invention relates to a system for using VoIP as a telephone and a wireless conference phone by transmitting VoIP wirelessly. More particularly, the present invention relates to a wireless conference phone system using VoIP technology over the Internet, which can reduce communication charges.

Recently, due to the development of Internet technology, the development of technology related to Internet phones that can exchange voice data on the Internet is active.

The above Internet phones are mainly implemented with Voice over Internet Protocol (VoIP) technology. VoIP is a technology for voice transmission such as telephone calls over IP, the basic communication protocol of the Internet. In other words, VoIP refers to a solution related to a technology for delivering voice data to the Internet or IP network, which has been used for data communication, and is an example of an Internet phone.

Voice Over Internet Protocol (VoIP) is a new communication technology that allows voice calls to be made over the Internet rather than the traditional telephone network. With this technology, expensive telephone services, such as international and long distance calls, can be used at a low local rate. This is because the Internet does not have the concept of city fees or long distance charges.

VoIP users can connect directly to the Internet through local telephone lines and make calls to any location from anywhere in the world. In the end, the birth of the world's common communication space, the Internet, inevitably served as an opportunity for the birth of the concept of VoIP. On the other hand, companies that pay a monthly fee and receive data leased line services can use voice technology free of charge between branches and headquarters, and between branches and branches.

A conference phone refers to a telephone mainly used in a remote meeting or conference, such as a long-time call with a branch office or a customer. Conventionally, such conference phones have been used for long distance international calls or landlines.

However, the conventional wired conference phone has a problem in that its use is restricted due to a burden of communication charges due to its long usage time.

The present invention is to solve the problems of the prior art, an object of the present invention is to provide a wireless conference phone system via the Internet using VoIP technology to enable long-term inexpensive calls with overseas branches and remote buyers. .

As a technical concept for achieving the object of the present invention, in the present invention, a handset and a baseset wirelessly connected to the handset, a local PSTN connected to the baseset, a LAN connected to the baseset, the local In a conference phone system including a counterpart terminal connected through a PSTN or through the LAN or the Internet, when a voice and DTMF signal are transmitted from the handset, the counterpart receives the digital signal from the baseset and uses the Internet to transmit a digital signal to the PC. A system is proposed that transmits to a terminal and, upon reception, to a wireless conference phone to wirelessly transmit a signal from the baseset to the handset.

1 is a schematic configuration diagram of an embodiment of a wireless conference phone system using VoIP according to the present invention.

FIG. 2 is a schematic block diagram of a handset that is an essential part of FIG. 1.

FIG. 3 is a schematic block diagram of a baseset which is an essential part of FIG. 1.

<Description of Major Symbols in Drawing>

100: handset 200: baseset

300: PC 400, 700: Local PSTN

500: Internet 600: ISP

800: user terminal 105, 205: antenna

110, 210: RF MSK 115, 215: CD / SS baseband modem

120, 225: ADPCM Codec 125: microphone

130: sounder 135, 220: microcontroller

140: ROM 145: Keyboard

150: LCD 155: power supply

230: BBA module 235: microprocessor

240: ADSP 245: line interface

250: PC 255: LAN

Hereinafter will be described in detail with reference to the accompanying drawings for the configuration and operation of the embodiment of the present invention.

1 is a schematic configuration diagram of an embodiment of a wireless conference phone system using VoIP according to the present invention.

A handset 100 for transmitting and receiving voice and DTMF wirelessly;

A base set 200 for receiving a voice signal or DTMF from the handset 100,

A PC 300 connected to the handset 200 via USB;

The Internet 500 connected to the PC 300 via a LAN,

It includes a user terminal 800 is connected through the Internet 500,

The user terminal 800 may be connected to the base set 200 through the local PSTN 400 and 700.

As can be seen in the embodiment of the present invention by using the VoIP technology for the conference phone function wirelessly, for this purpose, the handset 100 and the baseset 200 are connected to the RF circuit having a frequency of 900MHZ and the analog voice signal The PC 300, the PSTN telephone network 400, 700, a LAN or a modem are connected to a base set 200 having a function of converting the signal into a digital signal. That is, by a two-way connection via a regular telephone or a PC.

At the time of transmission, if the voice is spoken to the handset 100, the voice data is received from the baseset 200, and the analog voice signal is digitally packetized and sent to the PC 300 directly to the PSTN 700 and the Internet 500. It is transmitted to the counterpart terminal 800 through the gateway. When receiving, it is used as a general wireless conference phone. If there is no LAN in the above configuration, a PC modem can be used.

To summarize the operation of the embodiment of the present invention, the handset 100 for transmitting and receiving voice in the DSS method and the signal received from the handset or the base set 200 for converting the voice received from the PC 300 into a digital packet When the voice and DTMF signals are transmitted from the handset 100, the baseset 200 receives the digital signal and transmits the digital signal to the USB of the PC 300, which is transmitted to the counterpart terminal 800 through the Internet 500. Is sent. In addition, during reception, when the signal is wirelessly transmitted from the baseset 200 to the wireless conference phone, the call is received by the handset 100.

FIG. 2 is a schematic block diagram of a handset that is an essential part of FIG. 1.

2 is a block diagram of a wireless handset for a typical digital CD / SS (Code Division Spread Spectrum) wireless telephone or wireless PABX keyphone system.

A microphone 125 for inputting voice by the user, an ADPCM Codec 120 for converting a signal input from the microphone 125 into a digital signal, and a digital signal input from the ADPCM Codec 120 are used for spread spectrum ( Transmitting the CD / SS baseband modem 115 for modulating to spread spectrum and the spread spectrum signal input from the CD / SS baseband modem 115 via the antenna 105 wirelessly. RF module 110 for,

A keyboard 145 for inputting characters, a DTMF signal input from the keyboard 145 is transmitted to the RF module 110, and a microcontroller 135 which functions as a CPU of the system, and stores application programs. ROM 140, LCD 150 for outputting the input character, and a power supply 155 is configured.

When the user inputs the voice to the microphone, the handset of FIG. 2 converts the analog voice signal input from the ADPCM Codec into a digital signal, modulates the spread spectrum in the CD / SS baseband modem, and transmits it through the antenna.

On the other hand, when a user inputs a character or the like using the keyboard, the character and the like are displayed on the LCD, and at the same time, the DTMF signal is transmitted from the microcontroller to the RF module and transmitted through the antenna.

FIG. 3 is a schematic block diagram of a baseset which is an essential part of FIG. 1.

An antenna 205 for receiving a voice signal or DTMF signal transmitted from the handset of FIG. 2, an RF module 210 for transmitting a signal received from the antenna to the SS transceiver 215, and a reception from the RF module; SS transceiver 215 for demodulating the demodulated signal, ADPCM 225 for converting the digital signal input from the SS transceiver 215 into an analog signal, and serves as a main body of a general wireline telephone A BBA module 230 for transmitting an analog signal input from the ADPCM 225, an ADSP 240 for converting an analog signal input from the BBA module 230 into a digital packet, and the ADSP 240. 4 bit microcontroller for controlling the operation of the SS transceiver 215 and the ADPCM 225, and a line interface 245 consisting of a USB port and a Tell Line port for transmitting a digital packet inputted from the PC 250 to the PC 250. It is configured to include a microprocessor 235 for controlling the drive of 220 and, BBA module 230 and ADSP (240).

In the baseset, voice and DTMF signals transmitted from a handset are transmitted to an SS transceiver through a 900 MHz RF module, and the signal is demodulated in an SS transceiver to convert the digital signal from an ADPCM to an analog signal, and the converted analog signal. The BBA module converts the analog signal into a digital packet, transmits the signal to a PC, and transmits the analog signal to the ADSP to a user terminal through the Internet. USB is a terminal for transmitting voice and data between a line and a PC.

The handset and the baseset described above are descriptions of the operation of transmitting voice or DTMF signals from the handset, and the reception of the other party's voice and DTMF signals in the handset may be described in the reverse order of the above description. In other words, the handset serves as a receiver as a regular conference phone.

Although the embodiment of the present invention has been described with reference to a baseset that is wirelessly transmitted and received with a handset, the scope of protection of the present invention is not limited to the above embodiment, and implementation of VoIP technology through the Internet using the handset and the baseset is provided. It may include various embodiments of the wireless conference phone that can be achieved through.

As described above, in the present invention, a handset and a baseset wirelessly connected to the handset, a local PSTN connected to the baseset, a LAN connected to the baseset, the local PSTN or the LAN, In a conference phone system including a counterpart terminal connected through the Internet, when the voice and DTMF signals are transmitted from the handset, the baseset receives the baseset and transmits a digital signal to the counterpart terminal using the Internet via a PC USB. The wireless conference phone can be used to wirelessly transmit signals from the baseset to receive signals from the handset. By using the Internet, voice can be transmitted and received by VoIP technology. Can be used efficiently.

Claims (4)

In the wireless conference phone system using the Internet, A handset for transmitting and receiving voice and DTMF wirelessly; A base set 200 for transmitting and receiving a voice signal or DTMF from the handset, A PC connected with the handset via USB, An internet network connected to the PC via a LAN; It includes a user terminal connected through the Internet network, When the handset transmits voice and DTMF signals, it is received by the baseset, and the digital packet signal is transmitted to the counterpart terminal using the Internet via the USB of the PC, and when received, the user terminal or the wireless conference phone is transmitted to the baseset. A wireless conference phone system using the Internet, characterized in that for transmitting a signal and wirelessly transmitting a signal from the baseset to the handset. The wireless conference phone system according to claim 1, wherein the user terminal is connected to the baseset through a local PSTN. The method according to claim 1, wherein the handset, A microphone for the user to input voice, An ADPCM codec for converting a signal input from the microphone 125 into a digital signal, A CD / SS baseband modem for modulating the digital signal input from the ADPCM Codec into a spread spectrum; An RF module for wirelessly transmitting a spread spectrum signal input from the CD / SS baseband modem through an antenna; A keyboard for entering characters, A microcontroller which transmits the DTMF signal input from the keyboard to the RF module and functions as a CPU of the system; ROM for storing application programs, LCD for outputting input characters, Wireless conference phone system using the Internet, characterized in that comprising a power supply. The method according to claim 1, wherein the baseset, An antenna for receiving a voice signal or DTMF signal transmitted from the handset; An RF module for transmitting a signal received from the antenna to an SS transceiver; A spread spectrum transceiver (SS) for demodulating (demodulating) the signal received from the RF module; An ADPCM for converting a digital signal input from the SS transceiver into an analog signal, BBA module that serves as a main body of a general wire telephone, and transmits the analog signal input from the ADPCM, An ADSP for converting an analog signal input from the BBA module into a digital packet; A line interface consisting of a USB port and a Tell Line port for transmitting a digital packet input from the ADSP to a PC; A 4bit microcontroller for controlling the driving of the SS transceiver and the ADPCM; Wireless conference phone system using the Internet, comprising a BBA module and a microprocessor for controlling the operation of the ADSP.